package lab01;

/**
 * Created by ASUS on 2017/10/9.
 */
public class Test05_3 {
    public static void main(String[] args) {
        int i, sum;
        i = 1;
        sum = 0;
        do {
            sum = sum + i;
            i++;

        } while (i <= 55);
        System.out.println(sum);
    }
}
